real time clock

Yes and No.

The LOGO 0BA8 has a RTC (Real Time Clock) but you need to setup the correct time when you power it fot the first time.  The RTC has an Back-up battery, when power is off for time longer than the backup time  ( a full battery is 20 days) your clock is not correct, and you must set the time by hand.

The RTC in the LOGO is not a synchronised clock, ist works independed of a Real clock, the mismatch of the clock is approx 2 sec/day

The LOG0 0BA8 has a Summer/winter change automatically. You can setup several summer/wintertime, changedate, like EU UK, US, AUS, or set by hand-date

The Clock can set by minutes, so the smallest ON or OFF time is 1 minute.

The LOGO can by connected to a extension unit (CSM...). This unit can get the time of a GPS system and can connected to the LOGO, so the time is synchronised.

Hi,

Today nearly all Internetrouters have NTP-Server integrated. If you connect a LOGO! 8.2 or 8.3 to such a router, then you can use the NTP-Server for date&time sychronisation.

If LOGO! is mounted in a area where no Internet is availalbe, then you can also use LOGO! CMR or CIM. Both can connect to a NTP Server in Internet via mobile phone provider.

Hope this helps

ixo65

 

Toeternietoe

The LOGO can by connected to a extension unit (CSM...). 

That's not correct. The CSM module is only a unmanaged 4 port switch.

The CMR module can synchronize the date and time of a LOGO! 0BA8.

 Yes, your right. I have the wrong numbers.........

AutoGen_380038

If LOGO! is mounted in a area where no Internet is availalbe, then you can also use LOGO! CMR or CIM. Both can connect to a NTP Server in Internet via mobile phone provider.

In addition, the time signal can be sent via a separate NTP server, which transmits the time signal via.GPS/Gallileo or long wave catches, picks up.

For people who like to tinker, there is also the possibility to build an NTP server yourself with an inexpensive RaspberryPi, which receives the long-wave signal.